Improvement in pumps



MPEIERS. PHOTO-LITHOGRAFHR. WASHINGTON D C iiiuitrti taire EDMUNDEDWARDS, OF WESTMINSTER, ENGIJAND.

Letters PatentN .104,289, dated June 14,1870; patented iu .EnglandAugust (i, i868.

The Schedule referred to :in these Letters Fatemi: and making part ofthe same Mem- To all whom it may concern.:

Beit known that I, EDMUND EDWARDS, of Buckingham street, in the cityotvWestminster, England, civil engineer, a subject ot' the Queen ofGreat Britihain, have invented or discovered new and useful fIniprovemeuts in Pumps and I, the said EDMUND EDWARDS, do' herebydeclare the nature of the said` invention, and in what manner the sameis to be pei'- formed, to be particularly described and ascertained inand by the followingr statement thereof; that is to say- This inventionhas for its object improvements in pumps, and theimprovements relatemainly to that class oi' pumps in which iiexible rings are employed inplace of pistons or buckets.

.The drawing hereunto annexed shows a 'vertical section of a hand-liftpump, constructed according to "my invention.

A is a tube or barrel, to the lower end of which the M.suction-pipo isconnected. lhe upper end of the tube A is expandedinto a cup-shape.

B is another tube, ot' larger diameter, which is screwed to A, with theflexible ring C between them, and which is formed with a delivery-spoutB.

The center of the flexible ring is held between a flange formed aroundthe lower end of a short tube, B, anda ring, E, which lits around theupper end of the short tube.

l The upper end ot' this tube forms a scat for the .valve F, which is aloose disk of vulcanized India rubber, orotlier flexible material two ormore radial arms, D', passing across the water-way through the tube D,

- falso serve to support the valve.

.The valve is prevented from working od' its seat by two (or itmight bemore) arms, G G, radiating from a central point above the disk, andbolted or attached at their outer ends to the ring E. v

These arms allow the valve to rise suiiciently from its seat to allow ofthe free passage of water through it on' the down-stroke.

lhe outer edge of the ring E is turned up, as shown, so that when thepump is at work the valve will al- ""ways be covered with water.

Valves thus constructed may be adapted to the flexible diaphragms ofotlicixconstructions of diaphragm pumps.

' The arms G G; where they meet together, carry a pin, H, formed with ahead. AThis pin is embraced by a curved link, K, which, at its upperend, is jointed to the short arm of a lever, Ii, the longer arm of whichforms the lever-handle -for working the' pump.

The curved link K, near its lower end, is also formed with a projectionto bear againsttlie side of the tube B.

By thus jointing the short lever-arm of the pumpv-handle to the link'Kat a point intermediate between the center of the diaphragm an d theside. oi' me tube B, I am enabled to employ adia ihragm oi largediameter with a comparatively short stroke, while the end of the lowerend ot' the. lilik, working agaiust'the side of the tube B, prevents anyundue strain coming upon any part ot' the diaphragm, as it enablesV anapproximately vertical to-and-fro movement to he given the center of thediaphragm.

A certaim amount oi' free play is allowed between the pin H and thelink'l, where it embraces it, and by this means a still closeriuuiroximatiou to a vertical movement is given to the center of thediaphragi'u.

Where the ond ofthe arm ,li works against thc side of the tube l, aroller may be applied to it.

The piu upon which the lever-handle ot" the pump works is carried by asmall upright bracket, L, the

lower end ot' which is formed 'to embrace the upper edge of the tubo B,and the bracket L1 can be slid around the upper edge ot' the tube, andbe iixed to it in any desired posit-ion.

The arm K heilig able to turn freely around the pin H, allows of thehi'acket ILl being thus moved into any desired position- In cases whereit is not required to move the brucket carrying the lia-udle, it lan beiixicd to the upper part ot' the pump, and the curved arm Ii can then heattached to, or form part of the-ring Il.

M is a cap for covering 4over the upper end of thetube I5. A slotisformed in it to fit over the bracket Ll.

This cap might, if desired, be arranged to turn up as on 'a hinge-jointupon thc samepin as that-on which the lever-handle works.

N is a valve at the top oi' the suetionLpipe,

The valve-seat is of a conical forni, as shown, and around the upper endot' the* movable portion ot' the valve is a groove, into which is sprunga ring ot' vulcanized India rubber.

The movable portion ot' the valve. is also formed with a tail-piece ofthree leaves or feathers, and of suoli a length that the valve cannotget out of place unless the diaphragm be removed. Valves for other kindsot' pumps may be simiiarly constructed.

The several parts ot' the pump are so shaped that they may be cast toi'orni and put together iii their rough state with little or no fitting,and may then be ready for use; and by this means `the pumps may beconstructed cheaper, andbe more durable andciiicient than pumps 4asheretofore made. p

Pumps, such as above described, may also be formed into force-pumps byomitting the spoutou the tube B, and loadingpfroni the latter adelivery-pipe in place of A covering it over with a cap or cover, as abovo described.

In this case .I form a water-#tight joint at the point 4 where thelever-liandle passes through the tube B, by making the center or axisupon which the handle turns pass through zt stuing-box, the leverworking the diaphragm being,l within thestu'ng-box, and the haudleoutside ot' it.

'lhe diaphragm of the pump muy be made of vulcanized Indie rubber,leather, corrugated sheet motel, or other suitnole inztteriul, and thevnlves'mnl czisings of the pump may be of metal or earthenwure.

Vliet I claim isv The combination of the annuler flexible diaphragm,

`the short tube and the ring, clamping the inner edge o-the saiddinphrzig'm between them, and forming zt seat for the discharge-velue;all these parts being constructed to operate in combination :is setforth.

' Also, the combination of the discharge-vulve, the short tube on whichit rests, and thel cup-shaped ring which surrounds it in such ina-nnerthat the valve is always kept covered b; water; all those p arts bein gconstructed to operate in combination es set forth.

`Also, the combination of the annular flexible diaphragm, theclmnpinf-ring and short tube, the diskformedv dischmge-vztve, and theradial arms which forin the onge for the said discharge-valve :bt-beseparts being constructed to operette in combination as set forth.

Also, the cinnbinntion of the annular flexible dinphragm, thedisf'lxmge-vzilve, the clamping-ring and short tube, thc gri-votedcurved connecting-link, `:tud the lever-arm.; all these parte beingconstructed to operate in combination ats set forth. I

Also, the combination of the pump-barrel, the levcrarm, the pivotedcurved link lztnd its guiding projection, with the cage of the discharge-va-lve and the operate in combination its hereinbefore set forth.

Also, 'the combination of the conical valve-seat,

with :t puppet-valve constructed with its periphery grooved, :nn with ztring` of India rubber in said groove, :is hcl'orc ect forth.

EDMUND EDVARD'S.

Vitiiesses:

Roer. i5. Mom. j Street, London..4

liexible diaphragm fill these ports being constructed to

